epigenetics
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ep·i·ge·net·ics
(ĕp′ĭ-jə-nĕt′ĭks)n. (used with a sing. verb)
The study of heritable changes in gene expression that are caused by factors such as DNA methylation rather than by a change in the sequence of base pairs in DNA itself.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
epigenetics
(ˌɛpɪdʒɪˈnɛtɪks)n (functioning as sing)
(Genetics) the study of heritable changes that occur without a change in the DNA sequence
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014